How do you solve an equation by the square root property? Ex: 7x^2=42
1 answer:
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According to the given passage the most appropriate option is: C.
A single text produced by a previously unknown society.
<h3>Explanation:</h3>In light of this passage's excerpt, we can infer that it would be most challenging to interpret a piece of art for which we have no context—that is, no understanding of its language, history, inflection, or society and culture.
<h3>The definition of a single text:</h3>A single document that ties together the frequently disparate interests of parties involved in a conflict is used in a single-text negotiating strategy, a type of mediation.
<h3>What exactly is a paragraph?</h3>1. A paragraph with only one brief sentence that clearly states the main idea.
2. A paragraph that consists of a single lengthy sentence that could support three, four, or five sentences.
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Answer:
Bias for the estimator = -0.56
Mean Square Error for the estimator = 6.6311
Step-by-step explanation:
Given - A normally distributed random variable with mean 4.5 and standard deviation 7.6 is sampled to get two independent values, X1 and X2. The mean is estimated using the formula (3X1 + 4X2)/8.
To find - Determine the bias and the mean squared error for this estimator of the mean.
Proof -
Let us denote
X be a random variable such that X ~ N(mean = 4.5, SD = 7.6)
Now,
An estimate of mean, μ is suggested as
Now
Bias for the estimator = E(μ bar) - μ
=
=
=
=
=
= 3.9375 - 4.5
= - 0.5625 ≈ -0.56
∴ we get
Bias for the estimator = -0.56
Now,
Mean Square Error for the estimator = E[(μ bar - μ)²]
= Var(μ bar) + [Bias(μ bar, μ)]²
=
=
=
=
=
=
=
= 6.6311
∴ we get
Mean Square Error for the estimator = 6.6311